Method for preparing activated carbon from pomelo peels

Method for preparing activated carbon from pomelo peels

  • CN 103,318,885 A
  • Filed: 06/28/2013
  • Published: 09/25/2013
  • Est. Priority Date: 06/28/2013
  • Status: Active Application
First Claim
Patent Images

1. method of utilizing pomelo peel to prepare gac is characterized in that processing step is:

  • Get oneself through natural wind dry doubling drying the raw material pomelo peel, be cut into the segment of length and width 2-5cm;

    With KOH and the NaOH mixed liquid dipping of equal mass, mass ratio is shaddock Pi ︰

    mixed solution=1 ︰

    4-10;

    40 ℃

    -60 ℃

    of soaking temperatures, the time is 40-50 hour;



    pick up and dry without after dripping, and with the heat-up rate of 3-6 ℃

    /min, is heated to 800-1200 ℃

    in encloses container, makes its charing, and carbonization time is controlled at 4-8h;



    behind the cool to room temperature, be hydrochloric acid soln immersion, the pickling 4-6h of 20-25% with volumetric ratio;



    after took out and drain, making its pH value with rinsed with deionized water again was 7;



    with the material rebake 3-6h that obtains, and temperature is controlled to be 110-135 ℃

    ;



    be cooled to room temperature, obtains granular active carbon.

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